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#!/usr/bin/python
#
# This program source code file is part of KiCad, a free EDA CAD application.
#
# Copyright (C) 2012-2014 KiCad Developers, see change_log.txt for contributors.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you may find one here:
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# or you may search the http://www.gnu.org website for the version 2 license,
# or you may write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
from pcbnew import *
import FootprintWizardBase
import pcbnew
class TouchSliderWizard(FootprintWizardBase.FootprintWizard):
def GetName(self):
"""
Return footprint name.
This is specific to each footprint class, you need to implement this
"""
return 'Touch Slider'
def GetDescription(self):
"""
Return footprint description.
This is specific to each footprint class, you need to implement this
"""
return 'Capacitive Touch Slider wizard'
def GetValue(self):
return "TouchSlider-{s}_{x:g}x{y:g}mm".format(
s = self.pads['steps'],
x = pcbnew.ToMM(self.pads['length']),
y = pcbnew.ToMM(self.pads['width'])
)
def GenerateParameterList(self):
self.AddParam("Pads", "steps", self.uInteger, 4, min_value=2)
self.AddParam("Pads", "bands", self.uInteger, 2, min_value=1)
self.AddParam("Pads", "width", self.uMM, 10)
self.AddParam("Pads", "length", self.uMM, 50)
self.AddParam("Pads", "clearance", self.uMM, 1)
@property
def pads(self):
return self.parameters['Pads']
# build a rectangular pad
def smdRectPad(self,module,size,pos,name):
pad = D_PAD(module)
pad.SetSize(size)
pad.SetShape(PAD_SHAPE_RECT)
pad.SetAttribute(PAD_ATTRIB_SMD)
pad.SetLayerSet(pad.ConnSMDMask())
pad.SetPos0(pos)
pad.SetPosition(pos)
pad.SetName(name)
return pad
def smdTrianglePad(self,module,size,pos,name,up_down=1,left_right=0):
pad = D_PAD(module)
pad.SetSize(wxSize(size[0],size[1]))
pad.SetShape(PAD_SHAPE_TRAPEZOID)
pad.SetAttribute(PAD_ATTRIB_SMD)
pad.SetLayerSet(pad.ConnSMDMask())
pad.SetPos0(pos)
pad.SetPosition(pos)
pad.SetName(name)
pad.SetDelta(wxSize(left_right*size[1],up_down*size[0]))
return pad
# This method checks the parameters provided to wizard and set errors
def CheckParameters(self):
#TODO - implement custom checks
pass
# The start pad is made of a rectangular pad plus a couple of
# triangular pads facing tips on the middle/right of the first
# rectangular pad
def AddStartPad(self,position,touch_width,step_length,clearance,name):
module = self.module
step_length = step_length - clearance
size_pad = wxSize(step_length/2.0+(step_length/3),touch_width)
pad = self.smdRectPad(module,size_pad,position-wxPoint(step_length/6,0),name)
module.Add(pad)
size_pad = wxSize(step_length/2.0,touch_width)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,size_pad[1]/4),
name)
module.Add(tp)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,-size_pad[1]/4),
name
,-1)
module.Add(tp)
# compound a "start pad" shape plus a triangle on the left, pointing to
# the previous touch-pad
def AddMiddlePad(self,position,touch_width,step_length,clearance,name):
module = self.module
step_length = step_length - clearance
size_pad = wxSize(step_length/2.0,touch_width)
size_pad = wxSize(step_length/2.0,touch_width)
pad = self.smdRectPad(module,size_pad,position,name)
module.Add(pad)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,size_pad[1]/4),
name)
module.Add(tp)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(size_pad[0]/2,-size_pad[1]/4),
name
,-1)
module.Add(tp)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(-size_pad[0],0),
name,
0,
-1)
module.Add(tp)
def AddFinalPad(self,position,touch_width,step_length,clearance,name):
module = self.module
step_length = step_length - clearance
size_pad = wxSize(step_length/2.0,touch_width)
pad = self.smdRectPad(module,
wxSize(size_pad[0]+(step_length/3),size_pad[1]),
position+wxPoint(step_length/6,0),
name)
module.Add(pad)
tp = self.smdTrianglePad(module,wxSize(size_pad[0],size_pad[1]/2),
position+wxPoint(-size_pad[0],0),
name,
0,
-1)
module.Add(tp)
def AddStrip(self,pos,steps,touch_width,step_length,touch_clearance):
self.AddStartPad(pos,touch_width,step_length,touch_clearance,"1")
for n in range(2,steps):
pos = pos + wxPoint(step_length,0)
self.AddMiddlePad(pos,touch_width,step_length,touch_clearance,str(n))
pos = pos + wxPoint(step_length,0)
self.AddFinalPad(pos,touch_width,step_length,touch_clearance,str(steps))
# build the footprint from parameters
# FIX ME: the X and Y position of the footprint can be better.
def BuildThisFootprint(self):
steps = self.pads["steps"]
bands = self.pads["bands"]
touch_width = self.pads["width"]
touch_length = self.pads["length"]
touch_clearance = self.pads["clearance"]
step_length = float(touch_length) / float(steps)
t_size = self.GetTextSize()
w_text = self.draw.GetLineThickness()
ypos = touch_width/2 + t_size/2 + w_text
self.draw.Value(0, -ypos, t_size)
ypos += t_size + w_text*2
self.draw.Reference(0, -ypos, t_size)
# set SMD attribute
self.module.SetAttributes(MOD_CMS)
# starting pad
band_width = touch_width/bands
xpos = -0.5 * (steps - 1) * step_length
ypos = -0.5 * (bands - 1) * band_width
pos = wxPointMM(pcbnew.ToMM(xpos), pcbnew.ToMM(ypos))
for b in range(bands):
self.AddStrip(pos,steps,band_width,step_length,touch_clearance)
pos += wxPoint(0,band_width)
TouchSliderWizard().register()
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